Construction of presses



, J. E. HAGSTROM.

CONSTRUCTION OF PRESSES.

APPLICATION FILED JULY 1. 1911.

3 vwmtoz Je/m mm 9:51 M aHoM/w 1 nu: COLUMBIA ILANDORAPII C0. WASHINGTON, D. c.

UNITED STATES PATENT OFFICE.

JOEL E. HAGSTROM, OF BROOKLYN, NEW YORK, ASSIGNOR TO INDEPENDENT FILTER PRESS 00., INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CONSTRUCTION OF PRESSES.

Application filed July 7, 1917. Serial No. 179,273.

To all whom it may concern:

Be it known that I, JOEL E. HAos'rRoM, a citizen of the United States, and a resident of the borough of Brooklyn in the county of Kings, city and State of New York, have invented certain new and useful Improvements in the Construction of Presses, of which the following is a'specification.

This invention relates generally to the building of presses such as the hydrostatic or the screw-actuated press, that are provided with an external frame work designed to take up the strain exerted by the movable parts within, and it particularly appertains to the structure and disposition of the elements which constitute the binding means for the members of the said framework.

To mention only the filtering press, it is known that the frame of this press comprises two oppositely located fixed heads united by side bars, upon which a series of apertured containers for the substance to be subjected to pressure is slidably mounted. The several containers are usually arranged to be massed one upon another and finally driven together against one of the fixed heads, by means of a follower operated by a screw or ram from the other head placed opposite. Necessarily, great stress is imposed upon the side bars of the frame, during the pressing operation, and therefore it has been the custom hitherto to make these bars of steel, rolled to heavy planklike dimensions. It cannot be denied that the ponderons rolled-steel bars, to which reference is here made, do resist ordinary strains, but the excessive quantity of material required to produce them and the costly processes of machining, and milling their nneconomical sections, nevertheless, present decidedly objectionable features.

The primary object of the invention is to produce an improved binding means for the fixed heads aforesaid, which will permit of substitution of structural beams for the side bars and yet impart as much if not greater solidity to the frame of the press.

A secondary object is the production of a supericr mode a. construction for the said Specification of Letters Patent.

Patented July 15, 1919.

binding means, including structural beams and reinforcing elements therefor, which will enable the same to be made of different species of metals, characterized respectively by tensile strength and power to withstand compression.

Other objects and advantages will become apparent as the specification proceeds.

With the aforesaid objects in view the invention consists of the improvements, novel construction, arrangements and combinations of parts hereinafter described, defined in the subjoined claims and illustrated in their preferred embodiments by the annexed d 'awings, wherein like elements are designated by the same reference characters throughout the several views.

In the said drawings Figure 1 is a top plan view showing part of the frame of a press embodying one form of the invention;

Fig. 2 is a side elevation of the same part of the press frame, with the invention embodied therein;

Fig. 3 is a vertical transverse section on the irregular line 33 of Fig. 2;

Fig. 4 is a perspective view of one end of a structural beam forming part of the invention, such as is included in the preceding figures;

Fig. 5 is a similar view of a reinforcing element for the type of structural beam shown in Fig. 4;

Fig. 6 is afragmentary view showing in perspective one side of a fixed head of the press adapted to receive a structural beam and its reinforcing element;

Fig. 7 is a broken perspective view, representing a fixed head of similar configuration, to which a modified form of the invention is applied; and

Fig. 8 is a fragmentary sectional elevation, illustrating another modified form of the invention.

As above stated, a filtering press of usual type includes two fixed heads, as 11 which are situated opposite each other, either in a horizontal or in a vertical plane, according to the nature of the substance to be operated upon, the preferred method of handling them, and the adjusting means selected for working the press. Only one head 11 is shown in the annexed drawing, as the invention affects both heads in identically the same mannerand does not vary inany re-- spect as regards structure or arrangement of; parts, whether the head '11 belocated 7 forward or in'the'rea-r, or'at tl1e-base,-or at the top of the press frame. For the sake of clearness, however, it will be assumed in the present specification that the framework of the press stands out-in a horizontal direction and consequently that'the head His held in a vertical plane atfeither-endg as the drawing suggests. Thus, it may be considered that 'the='head- 11 f appearing in' several of thefigures 'is situated either 'at the frontend of' the' right side 'or" at the rean end of the left side -off the framework; But

no limitation re'garding -the 'scope' ofthe" in vention is intended in that respect?- on each side of the head 11, that is, one pair at 'each side of'the-press framef These-jaws are conveniently formed integral with the headat suitable distances" apart and constitute thereon retaining elements for the struc tural beams andfitheir reinforcements, previously' mentioned? Anyknown form of structuralbeanr may beused advantageously marrying-out the invention, that is, inproviding-the me'ansfor binding the fixed head'ofthia=press-together. In other word's,the binding means may includea channel b'eam, or -an I-bear'n, or a T-beam, or an angle-beam, or suchvariations thereof as are=cap'able-of discharging substantially the same functions- Two forms only, to wit, the channel-, beam and the- I-bea-m, are shown in the accompanying drawings, that thedescription of" the inven tion herein may be more concise.

As represented in Figs. 1, 2, 3' and S' the said bindi ng means for theheads ofth'e panel include a channel-beam consisting of a'vertically' disposed web *17 and lateral flanges 18, 19 extending outwardlyfrom "the 1 upper and. lower edges thereof respectively; This'beam is of greater depth than the space intervening between theaforementioned '12, 13' and in orden thatiitf may"be' lodged bodily crosswise in th'e 'said space, within the air of "j aw s,'it"is cut away on opposite sides to form notches or recesses 21, 22 thereby producinga neck portion, as at 23, Fig. 4, which fits'the gapbetween-the paired'jaw's close to-theadjoining edge of the head 11. Theflanges 18,19"itwill be noted, are similarly cut into so as to enable thejaws to pass and take ov'e'r the opposite edges of theneck -23, and they aremade toengage both sldes of th'e pa r of"jaws-in' such a way as to prevent longitudinal move 'reinforcingselement, preferably tion', by providing slots in -mendous.strains to which they may be subjeeted during the operation of the press, a in the shape of a block 25, is introduced between the said flanges and arranged tostrengthenthe*same,

as well asthe neck -23=and adjacent portions of *the web of the be'am, where the latter engages the head ll'of the'press-frame: This elementis shown detached in liigai5, wherein: it appears as a body mainly of dOVG UEUl cross section designed 'tofit' the correspond ingly shaped-interiorofthe channel beam depicted in Fig-: 1, bythe sideof'it. The

bloek25, it will be'observed, isalso notched or 'recess'ed at opposite" edges, as at26, -27

having between the edges a neck -portion 28 of same width as the before mentioned neck 1 28 'and"insertible 'with it between the pair speeti'vely.

'95 neclr' 28, the block remains wide enough to extend over the adjoining. sides "of the two j aws; thoughit is covered thereby the overlying-flange 18 and the underlying: flange 19 of the; charmer-beam at topn and bottom: re

The superimposed portions-of the beam and block, it will benseen, abut r. conj oint'lyi against the opposite sides of the jaws and*'-'the"head-11,-thereby forming a union therewith which possesses great strength, firmness and solidity.

Preferably, the said block 25- is made of cast iron, which possesses a relatively great power of PQSIStaDCG'tO direct crushing: This feature'of cast'iron' is taken advantage of in thepresent 'inventionto combine it with the inherent capabilityof tliematerial employed for the: beam, viz:-'wroughtsteel, to resist nation, and incidentally facilitatetheir in-' slieari1ig ancl tension; To favor the cornbi- I timate association the block is made tapening-as'appears in Fig; 5, to conform-with the outwardlyflaring channel of the beam.

It will be observed 'th at the wrought steel beam and cast =iron block combmed as above described, do-'not* have the same co-eflicient' of elongation, and therefore 'areli able'to act differently under heavystrains.- The differ ence, such asit'inaybe, is compensated for in the present eXeinplifica-tion of the inven-' the web .17 of the channel beanr, andby screwing bolts 32* intothe block 25, which are I arranged to pass centrally through these slots! Thelatter, it will be perceived} wi1'l prevent any tensionstrain being thrown upon the block in either direction and at the same time will offer no impediment to the elastic elongatiibn of the channel beam.- Meanwhile the full benefit derived from the ability of the block to resist compression is preserved. The parts, of course; resume thein normal relative positions after pressure, due to the resiliency of the steel.

A bridge-piece 35 is placed over the outer ends of the pair of jaws 12, 13, so as properly to confine the assembled channel-beam and block within the gap occurring between the said jaws. As shown, the bridge-piece 35 may be secured in position at its opposite ends, by means of bolts 36, 37 screwed into the jaws 12 and 13 respectively.

Fig. 7 illustrates how an I-beam can be used instead of the channel-beam hereinabove described, and be made to perform similar functions. As shown in this view, the I-beam comprises, as usual, a central web 40, and laterally projecting flanges on both sides, and both longitudinal edges thereof, which flanges are respectively numbered 41, 42, 43 and 44. The web and the flanges on one side of the latter are cut away to permit insertion of the I-beam between the jaws 12, 13 of the head 11, in the manner before explained with reference to the channel beam. lVith the I-beam it is not necessary to employ a strengthening block, as the outer pair of flanges 43, 44 are left intact and provide the requisite reinforcing ele ment. The I-beams may be held in place by the bridging piece 35, or equivalent side retainer.

The modification shown in Fig. 8 involves the same construction of channel beam as that before disclosed herein, but includes a somewhat different reinforced element. In the last-named view, a block 47 is represented as being made integral with a bridgepiece 48, both of which are secured by bolts 49, 50 to the jaws 12, 13, of the head 11, respeotively. The block 47, it will be seen, fills the channel of the beam, and afi'ords it the desired reinforcement.

lVhile certain embodiments of this device have been shown and described, it will be understood that changes in the form, arrangements, sizes, proportions and details thereof may be made without departing from the scope of the invention as defined by the appended claims.

Having described my invention what I desire to secure by Letters Patent and claim is:

1. In a device of the character specified, in combination, a head having extended jaws on each, side thereof, a structural beam the plane of which is perpendicular to the plane of the head, recesses within the structural beam capableof receiving the jaws, a reinforcingnmember abuttabhw upon the structuralbeannaiuh means for locking the rein'l'orcinganember to the head. i

2: In it device of'the character specified, in combination, a heads a pair of jaws extendinglrfrom opposite edges of the head, a structural beam, recesses within the structural beam capablciof receiving thejaws, a reinforcing member abutting upon the structural beam and means for locking the reinforcing member to the head.

3. In a device of the character specified, in combination, a head member, a pair of jaws extending from opposite edges of the head, a structural beam the plane of which is perpendicular to the plane of the head, recesses within the structural beam *apable of receiving the jaws to prevent longitudinal movement thereof, a reinforcing member abutting upon the structural beam and bolts holding the reinforcing member, the head and the structural beam from movement with respect to each other.

4. In a device of the character specified, in con'ibination, a head member, a pair of jaws extending from opposite edges of the head, a flanged structural beam the plane of which is perpendicular to the plane of the head, recesses within the structural beam capable of receiving the jaws to prevent longitudinal movement thereof, a reinforcing member abutting upon the structural beam and bolts passing through the reinforcing member, the head and the structural beam maintaining them in fixed position.

In a device of the character specified, a head, a pair of spaced jaws projecting outwardly from opposite sides of the head, a flanged structural beam having its flanges cut away to form abutting portions bearing on opposite sides of the jaws, a similarly recessed reinforcing member extending between the jaws and abutting upon the structural beam and means for locking together the reinforcing member, the structural beam and the head.

6. I n a device of the character specified, in combination, a head member. a pair of jaws extending from opposite edges of the head, a structural beam the plane of which is perpendicular to the plane of the head, recesses within the structural beam capable of receiving the jaws to prevent longitudinal movement thereof, an elongated reinforcing member abutting upon the structural beam and bolts holding the reinforcing member, the head and the structural beam from movement with respect to each other.

7. In a device of the character specified, a

head, a pair of spaced jaws projecting outwardly from opposite sides of the head, a flanged structural beam having 1ts flan es cut away to form abutting portions bearmg on opposite sides of the jaws, a similarly the city, county and State of New. York this elongated recessed reinforcing member ex- 6th day of Ju1y, l917. I

tending between the jaws and abuttinq upon 1 i I the structural beam and means for focking V JOEL AG T together the reinforcing member, the struc- Witnesses: 1 I, tural beam and the head. H. C. KARLsoN, Signed at the borough of Manhattan, in W. H.'G'EE.

Copies of this patent may be obtained for five cents eaeh,-by addressing the Commissioner of I atents Washington, D. C. o 1 1 

